RE: rman configuration
Date: Fri, 6 Jun 2008 14:54:29 -0500
Message-ID: <BLU108-W285AF78D03846875C0713397B70@phx.gbl>
I have controlfile autobackup on and it is going to tape as seen from the list backup command below. I was wondering if the default behavior was to snapshot the controlfile to disk even if the backup is going to tape.
BS Key Type LV Size Device Type Elapsed Time Completion Time------- ---- -- ---------- ----------- ------------ ---------------10663 Full 5.50M SBT_TAPE 00:00:04 05-JUN-08 BP Key: 10666 Status: AVAILABLE Compressed: NO Tag: TAG20080605T095515 Handle: control_c-1184362752-20080605-03 Media: Control File Included: Ckp SCN: 592220 Ckp time: 05-JUN-08 SPFILE Included: Modification time: 05-JUN-08 RMAN> Subject: RE: rman configurationDate: Fri, 6 Jun 2008 12:03:12 -0700From: Brandon.Allen_at_OneNeck.comTo: piontekdd_at_gmail.com; joe_dba_at_hotmail.com; oracle-l_at_freelists.org
That's mostly correct, just backwards on one point - it's to sync the catalog from the controlfile (the authoritative source), not the other way around. But you are correct that it's just a temp file not needed for restore/recovery operations, so to the OP - no need to change it. In fact, I don't think you can change it to tape. Maybe you're confusing the snapshot controlfile with controlfile autobackup? They are two completely different things and your controlfile autobackup goes to two places:
- On disk to $ORACLE_HOME/dbs (by default) whenver you make a change to your database structure (add datafile, tablespace, logfile, etc.)
- To the same channel type as an rman backup, i.e. if you run a database or log backup to sbt_tape and have controlfile autobackup ON, then it will automatically run a controlfile autobackup to sbt_tape after the completion of the database/log backup.
Regards,
Brandon
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